Coaching is widely used in the workplace to facilitate goal attainment and behavior change. Where coaching interventions are primarily used to enhance goal attainment, positive psychology interventions are primarily used as a means of enhancing well-being. However, despite the clear synergies between coaching and positive psychology there has been little work done on developing models that integrate these two separate but highly complementary change methodologies. This chapter outlines a range of coaching applications that are frequently used in the workplace and discusses differences between internal and external coaching and distinguishes executive from workplace coaching. Drawing on the concepts of languishing and flourishing, this chapter presents a dimensional model of goal striving and mental health/mental illness with two key dimensions: (1) mental health-illness and (2) intentional goal striving (high or low). A case study of the use of these positive psychology concepts in coaching is used to illustrate key points.